Cloudy days Chrono

Re: Cloudy days Chrono

My Pact is an OLD one. I'm sure the newer technology is better.

What I would do is take a few rounds you KNOW the muzzle velocity on and run them through first. If they are within a few fps it should be good to go. Remember to keep the temperature in mind. If these are rounds you last fired in August or September, the velocity will be a bit lower in cooler temps.

Good luck.
 
Re: Cloudy days Chrono

My Shooting Chrony Master Beta (hmmm, that sounds kinda dirty) works fine on cloudy days. Of course, it's the only chrony I have. Like a man with one watch, I always know what time it is. The guy with 2 watches is never quite sure which one is right. I've never had a chance to shoot with 2 chronys.

It comes with white screens to use on bright, sunny days. When I arrive at the range around sunrise or a little earlier, it won't work in low light until the sun comes up and things get a little brighter.
 
Re: Cloudy days Chrono

The white screens are there to actually simulate clouds which helps the optic see the bullet when it flies over it.

On a cloudy day or early morning, shoot across it without the screens. It doesn't need cloud on cloud - just more light in that situation. I do a lot of chronograph work and it is rare that I have a perfect day to shoot. Shooting without the screens works fine in the poor conditions.
 
Re: Cloudy days Chrono

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dar</div><div class="ubbcode-body">Do you get the proper readings on cloudy days when chrono a load?

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More so, then in direct sunlight. The sunshades, than come with it, are not needed on cloudy days.
 
Re: Cloudy days Chrono

My $100 Pro Chrono always triggers, clouds or clear.

But in the Seattle area, the sun is up for 8 hours [8 a.m. to 4 p.m.] at the winter solstice. But the clouds are so thick that it is very dark by 3:00 p.m.
The exit pupil requirements change.
As the afternoon at the range drags on, it becomes necessary to dial back the magnification on some scopes to have an exit pupil big enough for dilated eyes.
What does it all mean?
When the target goes blurry on overcast days, reduce scope magnification.